Inflatable Mattress

ABSTRACT

The present disclosure provides an inflatable mattress, including a first cavity body, a second cavity body, and a third cavity body. The first cavity body includes a top wall, a bottom wall, and a side surrounding wall, the top wall and/or the bottom wall serves as a lying part, and a first air cavity is formed by the top wall, the bottom wall, and the side surrounding wall. The second cavity body is disposed at a junction between the lying part and the side surrounding wall and the second cavity body together with an outer wall surface of the lying part and an outer wall surface of the side surrounding wall form a second air cavity, and the third cavity body is disposed at a junction between the lying part.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority of Chinese Patent Application No.201922166255.6, filed with the Chinese Patent Office on Dec. 5, 2019,entitled “Inflatable Mattress”, the contents of which are incorporatedherein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of inflatableproducts, and in particular to an inflatable mattress (or air mattress).

BACKGROUND ART

Inflatable mattresses are articles which are now used more and morefrequently at home or during travel, which can be conveniently foldedand stored and provide a good experience in use.

However, there are still some problems with the existing inflatablemattresses. Upon an edge of the mattress is compressed, it is collapsedto a deep degree, which will affect the user experience and make aperson lying thereon feel uncomfortable.

SUMMARY

Embodiments of the present disclosure are implemented as follows:

An embodiment of the present disclosure provides an inflatable mattress,comprising: a first cavity body, a second cavity body, and a thirdcavity body;

wherein the first cavity body comprises a top wall, a bottom wall, and aside surrounding wall, the top wall and/or the bottom wall serves as alying part for a user to lie thereon, wherein a first air cavity isformed by the top wall, the bottom wall, and the side surrounding wall;

the second cavity body is disposed at a junction between the lying partand the side surrounding wall and the second cavity body together withan outer wall surface of the lying part and an outer wall surface of theside surrounding wall form a second air cavity, and the third cavitybody is disposed at a junction between the lying part and the secondcavity body and the third cavity body together with an outer wallsurface of the second cavity body and the outer wall surface of thelying part form a third air cavity;

a height of the third cavity body is lower than a height of the secondcavity body in a height direction of the inflatable mattress when inuse.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate technical solutions of embodimentsof the present disclosure, drawings required for use in the embodimentswill be described briefly below. It is to be understood that thedrawings below are merely illustrative of some embodiments of thepresent disclosure, and therefore should not be considered as limitingits scope. It will be understood by those of ordinary skill in the artthat other relevant drawings can also be obtained from these drawingswithout any inventive effort.

FIG. 1 is a schematic structural diagram of an inflatable mattressaccording to the present disclosure;

FIG. 2 is a partially sectional view of FIG. 1;

FIG. 3 is a partially enlarged view of a portion A in FIG. 2;

FIG. 4 is a partially sectional view of an inflatable mattress of thepresent disclosure;

FIG. 5 is a partially enlarged view of a portion B in FIG. 4;

FIG. 6 is a partially sectional view of a first modified structure ofthe inflatable mattress of the present disclosure;

FIG. 7 is a partially sectional view of a second modified structure ofthe inflatable mattress of the present disclosure;

FIG. 8 is a partially sectional view of a third modified structure ofthe inflatable mattress of the present disclosure;

FIG. 9 is a partially sectional view of a fourth modified structure ofthe inflatable mattress of the present disclosure;

FIG. 10 is a schematic structural diagram of a fifth modified structureof the inflatable mattress of the present disclosure;

FIG. 11 is a schematic structural diagram of a sixth modified structureof the inflatable mattress of the present disclosure;

FIG. 12 is a schematic structural diagram of a surrounding wall and twosupporting walls of the present disclosure;

FIG. 13 is a schematic structural diagram of a first partitioning wallof the present disclosure;

FIG. 14 is a schematic structural diagram of a seventh modifiedstructure of the inflatable mattress of the present disclosure;

FIG. 15 is a schematic exploded structural view of the inflatablemattress corresponding to FIG. 13; and

FIG. 16 is a sectional view of the inflatable mattress with the seventhmodified structure of the present disclosure.

-   -   Reference Numerals: 10-first cavity body; 11-top wall; 12-bottom        wall; 13-side surrounding wall; 14-lying part; 15-first air        cavity; 20-second cavity body; 21-second air cavity; 30-third        cavity body; 31-third air cavity; 40-double-covered air valve;        50-built-in DC electric inflating pump; 61-honeycomb-structured        circular supporting strap; 62-closed loop-shaped supporting        strap; 63-straight-strip supporting strap; 64-vertical-strip        supporting strap; 65-closed wavy supporting strap; 70-fourth        cavity body; 71-fourth air cavity; 80-inner enclosure;        81-through hole; 90-outer enclosure; 001-barrier wall; 002-main        cavity; 003-annular cavity; 301-sub-cavity; 100-inflatable        mattress; 110-supporting wall; 111-top wall; 112-bottom wall;        120-surrounding wall; 121-bent portion; 130-first partitioning        wall; 131-first partitioning strap; 132-first side edge;        133-second side edge; 134-first fracture portion; 140-main air        storage cavity; 141-first sub-cavity; 142-second sub-cavity;        143-third sub-cavity; 144-fourth sub-cavity; 150-second        partitioning wall; 151-second partitioning strap; 152-second        fracture portion; 160-pull strap.

DETAILED DESCRIPTION OF EMBODIMENTS

In order to further clarify the objects, technical solutions, andadvantages of the embodiments of the present disclosure, the technicalsolutions of the embodiments of the present disclosure will be describedbelow clearly and completely with reference to the drawings of theembodiments of the present disclosure. It is apparent that theembodiments to be described are some, but not all of the embodiments ofthe present disclosure. Generally, the components of the embodiments ofthe present disclosure, as described and illustrated in the figuresherein, may be arranged and designed in a wide variety of differentconfigurations.

Thus, the following detailed description of the embodiments of thepresent disclosure, as represented in the figures, is not intended tolimit the scope of the present disclosure as claimed, but is merelyrepresentative of selected embodiments of the present disclosure. Allthe other embodiments obtained by those of ordinary skill in the art inlight of the embodiments of the present disclosure without inventiveefforts will fall within the scope of the present disclosure as claimed.

It should be noted that similar reference numerals and letters refer tosimilar items in the following figures, and thus once an item is definedin one figure, it may not be further defined or explained in thefollowing figures.

In the description of the present disclosure, it should be noted thatorientation or positional relations indicated by the terms such as“inner” and “outer” are the orientation or positional relations shownbased on the figures, or the orientation or positional relations inwhich the product is conventionally placed in use, and these terms areintended only to facilitate the description of the present disclosureand simplify the description, but not intended to indicate or imply thatthe referred devices or elements must be in a particular orientation orconstructed or operated in the particular orientation, and thereforeshould not be construed as limiting the present disclosure. In addition,terms such as “first” and “second” are used for distinguishing thedescription only, and should not be understood as an indication orimplication of relative importance.

In the description of the present disclosure, it should also be notedthat the terms “disposed” and “connected” should be understood broadlyunless otherwise expressly specified or defined. For example, aconnection may be fixed connection or detachable connection or integralconnection, may be mechanical connection or electrical connection, ormay be direct coupling or indirect coupling via an intermediate mediumor internal communication between two elements. The specific meanings ofthe above-mentioned terms in the present disclosure can be understood bythose of ordinary skill in the art according to specific situations.

It should be noted that the features in the embodiments of the presentdisclosure may be combined with each other without conflict.

An object of the present disclosure is, for example, to provide aninflatable mattress by which at least the technical problem of acollapsed edge of the prior inflatable mattress can be alleviated.

Additionally, according to some embodiments of the present disclosure,optionally, the top wall is provided as the lying part, both the lyingpart and the bottom wall are provided with supporting straps, and atleast one of the supporting straps on the lying part is connected withat least one of the supporting straps on the bottom wall by a limitingpull strap.

With the arrangement of the supporting straps, when the inflatablemattress is placed and used even in a relatively smooth place, theinflatable mattress can be kept in place and is prevented from shiftinglaterally during use so as to ensure the user experience.

Optionally, the inflatable mattress further comprises a fourth cavitybody, wherein the fourth cavity body is disposed at a junction betweenthe bottom wall and the side surrounding wall and fourth cavity bodytogether with an outer wall surface of the bottom wall and the outerwall surface of the side surrounding wall form a fourth air cavity.

Due to the presence of the fourth cavity body, after the fourth aircavity is inflated, a support structure can be formed in thecircumferential direction of the bottom wall to further enhance thesupport strength of the edge portion of the inflatable mattress, whichis conducive to preventing collapse of the edge portion of theinflatable mattress.

Optionally, both the top wall and the bottom wall are provided as thelying parts, the lying parts are provided with supporting straps, andthe respective supporting straps of the two lying parts are connected bylimiting pull straps.

With the arrangement of the supporting straps, when the inflatablemattress is placed and used even in a relatively smooth place, theinflatable mattress can be kept in place and is prevented from shiftinglaterally during use so as to ensure the user experience. Moreover, boththe top wall and the bottom wall are designed as the lying parts, suchthat the inflatable mattress can be used more conveniently, and theinconvenience of distinguishing the front and back sides is eliminated.

Optionally, the second cavity body and the third cavity body adjacent toeach other are used as a support group, and the first cavity body issymmetrically provided with two support groups on the two opposite sidesin the height direction of the inflatable mattress.

Due to the presence of the two symmetrical support groups, when a forceis applied in a vertical direction of the inflatable matress, theinflatable mattress has better support performance and misalignment ofthe upper and lower support groups is unlikely to occur.

Optionally, the second cavity body and the third cavity body are bothdistributed in a shape of two concentric rectangles.

The second cavity body and the third cavity body distributed in theshape of two concentric rectangles can ensure more comprehensive supportat the circumferential edge of the first cavity body to reduce the areahaving weak support. Moreover, the gas in the air cavity is enabled tobe distributed more uniformly, which is conducive to prevention ofcollapse of the edge positons.

Optionally, each supporting strap is a closed loop-shaped supportingstrap, a honeycomb-structured circular supporting strap, astraight-strip supporting strap, a vertical-strip supporting strap, asingle-strip wavy supporting strap, or a closed wavy supporting strap.

All of the various types of supporting straps can achieve a good effectwhen in use, and the users can be provided with different choices toimprove the user experience.

Optionally, the first air cavity, the second air cavity, and the thirdair cavity communicate with one another.

Since the gas can circulate among the air cavities, only one valve isrequired for realizing the inflation and deflation of the multiple aircavities, and the inflation and deflation can be performed with lesstime and operations and with great convenience.

Optionally, the inflatable mattress comprises a valve, wherein the valveis disposed on the side surrounding wall, and the valve is configured tocommunicate the first air cavity with an external environment ordisconnect the first air cavity from the external environment.

A different cover may be selected to be opened depending on thedeflation or inflation, so that no air leakage occurs during inflation,the deflation can be performed at a faster speed, and there is no needto separately provide an additional deflation valve.

Optionally, the inflatable mattress further comprises a built-in DCelectric inflating pump which is disposed on the side surrounding walland configured to inflate the inflatable mattress.

Due to the arrangement of the built-in DC electric inflating pump, it isunnecessary to separately provide an external inflating pump when theinflatable mattress needs to be inflated, so that it is more convenientto carry and use the inflatable mattress when going out, and its use isavoided from being affected in case that the inflating pump is forgottento be carried.

An embodiment of the present disclosure also provides an inflatablemattress. The inflatable mattress comprises: a top wall, a bottom wall,an inner enclosure, an outer enclosure, and at least one barrier wall,wherein the top wall and the bottom wall are arranged at an interval ina thickness direction of the inflatable mattress, the inner enclosureextends in a circumferential direction of the top wall or the bottomwall and is connected with both of the top wall and the bottom wall, anda main cavity is defined by the inner enclosure, the top wall, togetherwith the bottom wall; the outer enclosure is located on an outer side ofthe inner enclosure and extends in a circumferential direction of theinner enclosure, the outer enclosure is connected with the top wallor/and the inner enclosure on one side thereof in the thicknessdirection of the inflatable mattress and is connected with the bottomwall or/and the inner enclosure on the other side thereof, and anannular cavity is defined by the outer enclosure together with the innerenclosure; the at least one barrier wall is each disposed in the annularcavity, and each barrier wall extends in the circumferential directionof the inner enclosure and is connected with both of the inner enclosureand the outer enclosure, so that the annular cavity is divided into aplurality of sub-cavities arranged sequentially in the thicknessdirection of the inflatable mattress.

Optionally, the plurality of sub-cavities all communicate with the maincavity.

Optionally, a through hole is provided in the inner enclosure so that atleast one of the plurality of sub-cavities communicates with the maincavity.

An embodiment of the present disclosure also provides an inflatablemattress. The inflatable mattress comprises:

two supporting walls, a surrounding wall, and a first partitioning wall,wherein the two supporting walls are arranged at an interval in athickness direction of the inflatable mattress, wherein the surroundingwall is connected with both of the two supporting walls and extends in acircumferential direction of the supporting wall, and a main air storagecavity is defined by the surrounding wall together with the twosupporting walls; the first partitioning wall is located in the main airstorage cavity, the first partitioning wall is connected with both thesurrounding wall and one of the two supporting walls or is connectedwith both of the two supporting walls, the first partitioning wallextends in a circumferential direction of the surrounding wall, and thefirst partitioning wall divides the main air storage cavity into a firstsub-cavity and a second sub-cavity; the first partitioning wall has atleast one first fracture portion in its extension direction, and thefirst sub-cavity communicates with the second sub-cavity through the atleast one first fracture portion.

Optionally, the first partitioning wall comprises a plurality of firstpartitioning straps, wherein each of the first partitioning straps isconnected with both the surrounding wall and one of the two supportingwalls, the plurality of first partitioning straps are arranged atintervals in the circumferential direction of the surrounding wall, andone of the first fraction portions is formed between the respectivefirst partitioning straps adjacent in the circumferential direction ofthe surrounding wall.

Optionally, the surrounding wall has bent portions in its extensiondirection, and one of the first fracture portions is correspondinglydisposed where at least one of the bent portions is provided.

Optionally, the number of the bent portions is four, and one firstfracture portion is correspondingly disposed at each of the bentportions.

Optionally, the second sub-cavity is on an outer side of the firstsub-cavity, and the second sub-cavity has a triangular cross-sectionalshape, wherein the cross section is a plane perpendicular to anextension direction of the second sub-cavity.

Optionally, the inflatable mattress further comprises a secondpartitioning wall, wherein the first partitioning wall and the secondpartitioning wall are arranged at an interval in the thickness directionof the inflatable mattress, the second partitioning wall is in the mainair storage cavity, the second partitioning wall is connected with boththe surrounding wall and the other one of the two supporting walls, thesecond partitioning wall extends in the circumferential direction of thesurrounding wall, and the second partitioning wall separates the firstsub-cavity into a third sub-cavity and a fourth sub-cavity communicatingwith each other.

Optionally, the second partitioning wall has at least one secondfracture portion in its extension direction, and the third sub-cavitycommunicates with the fourth sub-cavity through the at least one secondfracture portion.

Optionally, the fourth sub-cavity is on an outer side of the thirdsub-cavity, and the fourth sub-cavity has a triangular cross-sectionalshape, wherein the cross section is a plane perpendicular to anextension direction of the fourth sub-cavity.

Optionally, the inflatable mattress further comprises a pull strap,wherein the pull strap is in the main air storage cavity, and two endsof the pull strap are connected with the two supporting walls,respectively.

An embodiment of the present disclosure also provides an inflatable bed.The inflatable bed comprises:

an inflatable mattress according to any one of the precedingembodiments.

The embodiments of the present disclosure include, for example, thefollowing beneficial effects:

The inflatable mattress is inflated. When a user is lying on theinflatable mattress, the first cavity body provides the majority ofsupport for the user, and when the user's body presses against an edgeportion of the inflatable mattress, the user is supported by the secondcavity body. The third cavity body having a height lower than that ofthe second cavity body is unlikely to be directly pressed down and canprovide further support at the edge position to prevent excessivecollapse of the edge position. Moreover, since the third cavity body isconnected with both of the second cavity body and the lying part, thethird cavity body has a certain pulling effect on the second cavity bodyto further prevent collapse of the second cavity body due to a forceapplied thereto and to provide a better using experience for the user.

Referring to FIG. 1 to FIG. 3, the present disclosure provides aninflatable mattress, comprising: a first cavity body 10, a second cavitybody 20, and a third cavity body 30.

The first cavity body 10 comprises a top wall 11, a bottom wall 12, anda side surrounding wall 13, wherein the top wall 11 and/or the bottomwall 12 serve(s) as a lying part 14 for a user to lie thereon, and afirst air cavity 15 is formed by the top wall 11, the bottom wall 12,and the side surrounding wall 13.

The second cavity body 20 is disposed at a junction between the lyingpart 14 and the side surrounding wall 13 and the second cavity bodytogether with an outer wall surface of the lying part 14 and an outerwall surface of the side surrounding wall 13 form a second air cavity21; the third cavity body 30 is disposed at a junction between the lyingpart 14 and the second cavity body 20 and the third cavity body togetherwith an outer wall surface of the second cavity body 20 and the outerwall surface of the lying part 14 form a third air cavity 31.

After the inflatable mattress is filled with a gas (air usually), theheight of the third cavity body 30 is lower than the height of thesecond cavity body 20 in the height direction of the inflatablemattress.

Here, the first air cavity 15, the second air cavity 21, and the thirdair cavity 31 communicate with one another. In other words, the gas inthe first air cavity 15, the gas in the second air cavity 21, and thegas in the third air cavity 31 can circulate through one another. Sincethe gas can circulate among the multiple air cavities, inflation anddeflation of the multiple air cavities may be realized by providing theinflatable mattress with only one valve, and the inflation and deflationcan be performed with less time and simplified operations, which bringsgreat convenience.

When a user is lying on an inflatable mattress filled with gas, thefirst cavity body 10 provides the majority of support for the user, andwhen the user's body presses against an edge portion of the inflatablemattress, the user is supported by the second cavity body 20. Since thethird cavity body 30 has a height lower than that of the second cavitybody 20, the third cavity body is unlikely to be directly pressed downand can provide additional support at the edge position to preventexcessive collapse of the edge position. Moreover, since the thirdcavity body 30 is connected with both of the second cavity body 20 andthe lying part 14, the third cavity body 30 has a certain pulling effecton the second cavity body 20 to further prevent collapse of the secondcavity body 20 due to a force so as to provide a better using experiencefor the user.

Here, the materials used in the respective cavities may beenvironmentally friendly materials, such as 6P environmentally friendlymaterials (matrials containing no Dis-2-ethylhexyl phthalate (DEHP),Benzyl butyl phthalate (BBP), Benzyl butyl phthalate (BBP), Benzyl butylphthalate (BBP), Di iso decyl phthalate(DIDP), or Di iso decylphthalate(DIDP)), which are environmentally friendly and non-toxic.

In the present disclosure, the inflatable mattress further comprises adouble-covered air valve 40. The double-covered air valve 40 is disposedon the side surrounding wall 13. A different cover of the double-coveredair valve 40 may be selected to be opened depending on a differentoperation of deflation or inflation, so that the gas in the air cavitiesis not prone to leak out during inflation, and the gas in the aircavities is discharged at a faster speed during deflation than duringinflation to shorten the deflation time; and it is unnecessary toseparately provide an additional deflation valve so that the cost issaved.

Optionally, the double-covered air valve 40 comprises two sealingcovers, wherein a smaller sealing cover may cover a larger sealingcover, and the larger sealing cover may cover an opening of the sidesurrounding wall 13 and serves as a passage for inflation and deflation.When the larger sealing cover does not block the opening, the gas can bedischarged from the air cavities. The deflation speed is fast becausethe opening is completely exposed, and the multiple air cavitiescommunicate with one another so that all the gas from the inflatablemattress can be discharged, which facilitates a convenient and quickstorage. When the larger sealing cover blocks the opening and thesmaller sealing cover does not block the larger sealing cover, the aircavities can be inflated. The larger sealing cover is provided with anair hole and with a one-way valve plate, so that the gas can only befilled into the air cavities from the outside of the inflatablemattress, while the gas in the air cavities cannot be automaticallydischarged. After the inflation is finished, the one-way valve plate andthe air hole of the larger sealing cover are blocked by the smallersealing cover, which can further improve the air tightness and preventair leakage from the inflatable mattress. The double-covered air valve40 may be selected with reference to the two-stage double-covered airintake fittings in the general technology, and will not be described indetail here.

Optionally, the inflatable mattress further comprises a built-in DCelectric inflating pump 50 configured to inflate the inflatablemattress, wherein the built-in DC electric inflating pump 50 is disposedon the side surrounding wall 13, and an air outlet of the built-in DCelectric inflating pump 50 communicates with the first air cavity 15.Due to the arrangement of the built-in DC electric inflating pump 50, itis unnecessary to separately provide an external inflating pump when theinflatable mattress needs to be inflated, so that it is more convenientto carry and use the inflatable mattress when going out, and its use isavoided from being affected in case that the inflating pump is forgottento be carried.

It can be understood that when the built-in DC electric inflating pump50 is damaged, an external inflating pump may also be used to inflatethe air cavity of the inflatable mattress via the double-covered airvalve 40.

Optionally, in the present disclosure, the top wall 11 is used as thelying part 14, both the lying part 14 and the bottom wall 12 areprovided with supporting straps (or strips or bands), the supportingstraps on the lying part 14 are equal in number and are in one-to-onecorrespondence with the supporting straps on the bottom wall 12, and thesupporting straps on the lying part 14 and the supporting straps on thebottom wall 12 are connected by a limiting pull strap(s) (not shown). Inthe present disclosure, the supporting straps are honeycomb-structuredcircular supporting straps 61. Apparently, referring to FIG. 6, thesupporting straps may also be closed loop-shaped supporting straps 62,or referring to FIG. 7, the supporting strap may be straight-stripsupporting straps 63; or referring to FIG. 8, the supporting straps maybe vertical-strip supporting straps 64; or referring to FIG. 9, thesupporting straps may be closed wavy supporting straps 65. In addition,the closed wavy supporting straps 65 may be replaced with single-stripwavy supporting straps so as to provide users with more choices. Itshould be noted that the shape and number of the supporting straps areselected as required, and are not to be completely listed in the presentdisclosure. With the arrangement of the supporting straps, when theinflatable mattress is placed and used in a relatively smooth place, thesupporting straps can provide a better adhesion capability for theinflatable mattress, so that the inflatable mattress is kept in placeand is prevented from shifting laterally or even rolling over during useso as to ensure the using experience. Moreover, the user is in contactwith the supporting straps disposed on the lying part 14, and there is alarge friction between the user and the lying part 14, so that the useris not prone to slide on the inflatable mattress, and the userexperience is improved.

Optionally, each limiting pull strap is a pull strap with no elasticityor weak elasticity, which can avoid the top wall 11 and the bottom wall12 from being spaced too far away from each other in the heightdirection of the inflatable mattress (in the thickness direction of theinflatable mattress) after inflation. In addition, each twocorresponding supporting straps located on the top wall 11 and thebottom wall 12 may be connected by a cylindrical limiting pull strap, ormay be connected by a strip-shaped limiting pull strap. A single ormultiple strip-shaped limiting pull strap(s) may be provided, andoptionally, multiple limiting pull straps are provided, and each twocorresponding supporting straps are connected by one limiting pullstrap.

It should be noted that, in the present embodiment, the number of thelimiting pull straps is two, and the two ends of each limiting pullstrap are connected with the corresponding supporting straps on the topwall 11 and the bottom wall 12, respectively. After the inflatablemattress is inflated, the two limiting pull straps are in a state ofbeing substantially in parallel to each other, and of course, the twolimiting pull straps may also be designed in a crossed arrangement. Theconnection method may be flexibly selected during production tofacilitate the production and reduce unnecessary costs. The limitingpull straps are provided such that after the inflatable mattress isinflated, the overall shape of the first cavity body 10 can bemaintained in a flat state of a common mattress, which allows the userto lie down thereon easily.

As shown in FIG. 2, optionally, in the present disclosure, theinflatable mattress further comprises a fourth cavity body 70. Thefourth cavity body 70 is disposed at a junction between the bottom wall12 and the side surrounding wall 13 and the fourth cavity body togetherwith the outer wall surface of the bottom wall 12 and the outer wallsurface of the side surrounding wall 13 form a fourth air cavity 71. Thefourth cavity body 70 is provided such that after the fourth air cavity71 is inflated, a support structure can be formed in the circumferentialdirection of the bottom wall 12 to further strengthen the supportstrength of the edge portion of the inflatable mattress, which isconducive to preventing collapse of the edge portion of the inflatablemattress.

The second cavity body 20 and the third cavity body 30 adjacent to eachother are used as a support group, and the second cavity body 20 and thethird cavity body 30 of each support group are distributed in a shape oftwo concentric rectangles. The second cavity body 20 and the thirdcavity body 30 distributed in the shape of two concentric rectangles canensure more comprehensive support at the circumferential edge of thefirst cavity body 10 to reduce the area having weak support. Moreover,the gas in the air cavities is enabled to be distributed more uniformly,which is conducive to prevention of excessive collapse of the edgeposition.

The inflatable mattress according to the present disclosure is based onthe following principle:

The smaller sealing cover of the double-covered air valve 40 is opened,and the inflatable mattress is inflated by the built-in DC electricinflating pump 50. Due to the presence of the limiting pull straps, whenthe interior of the inflatable mattress is filled with gas, the outershape of the first cavity body 10 is controlled and a uniform supportingeffect can be maintained in combination with the function of thesupporting straps, such that the user's weight can be as distributeduniformly as possible to reduce the deformation.

When the user's torso is lying at the edge position of the entireinflatable mattress, the second cavity body 20 serves as a support forthe torso. Since the third cavity body 30 is unlikely to be brought intodirect contact with the user and is not easily deformed by compression,the third cavity body 30 may serve as a reinforcing rib to prevent alarge deformation of the second cavity body 20 when being compressed,and also to make a certain contribution to maintaining the supportstrength of the lying part 14. When the torso moves away from thecompressed position (e.g., turning over), the compressed second cavitybody 20 can also be restored more quickly so that the air pressure inthe air cavity remains distributed relatively uniformly because thethird cavity body 30 has a pulling effect on the second cavity body 20.The supportability of the edge position can be effectively improved, sothat no position is collapsed to a large degree when the user is lyingon the inflatable mattress and the user will feel more comfortable.

In addition, since the supporting straps provide auxiliary support andprovide a certain adhesion capability, the cases of lateral shift orrollover of the entire inflatable mattress can be reduced, and theinflatable mattress is comfortable and safe in use and provides a betterusing experience. It is found by actual tests that the inflatablemattress according to the present disclosure can bear a weight of 600kg, and shows a particularly significant improvement in supportingcapability as compared with common inflatable mattresses. Since theinflatable mattress has a simple structure which is manufactured moreconveniently, the process requirements are advantageously reduced,whereby the cost required for production can also be reduced to acertain extent, which is also beneficial to the production.

Referring to FIG. 4 and FIG. 5, the present disclosure provides aninflatable mattress. The inflatable mattress is different from theinflatable mattress described above in that:

each of the top wall 11 and the bottom wall 12 serves as the lying part14, the lying part 14 is provided with supporting straps, and therespective supporting straps of the two lying parts 14 are provided atcorresponding positions and are connected by limiting pull straps.

The second cavity body 20 and the third cavity body 30 adjacent to eachother are used as a support group, and the first cavity body 10 issymmetrically provided with two support groups on the two opposite sidesin the height direction of the inflatable mattress.

The rest structures and functions may be understood with reference tothe inflatable mattress mentioned above.

With the arrangement of the supporting straps, when the inflatablemattress is placed and used in a relatively smooth place, the supportingstraps can provide a better adhesion capability for the inflatablemattress, so that the inflatable mattress is kept in place and isprevented from shifting laterally or even rolling over during use so asto ensure the using experience. Moreover, both the top wall 11 and thebottom wall 12 are designed as the lying parts 14, such that theinflatable mattress can be used more conveniently, and the inconvenienceof distinguishing the front and back sides is eliminated. Since thereare two symmetrical support groups, the inflatable mattress has bettersupport performance and misalignment of the two support groups isunlikely to occur when a force is applied in a vertical direction.

It should be noted that the front and back surfaces describedhereinabove mean that one side on which the user is lying, of the twosides in the height direction of the inflatable mattress, is used as afront side, and the other side opposite to the front side is a backside.

The inflatable mattress according to the present disclosure can providegood support for the user to avoid the problem of uncomfortable usecaused by excessive deformation of the inflatable mattress, and goodsupport can be provided even at the edge positions of the inflatablemattress, and therefore a good using experience is provided.

Referring to FIG. 10, the present disclosure also provides an inflatablemattress, comprising a top wall 11, a bottom wall 12, an inner enclosure80, an outer enclosure 90, and at least one barrier wall 001, whereinthe top wall 11 and the bottom wall 12 are arranged at an interval alongthe thickness direction of the inflatable mattress, the inner enclosure80 extends along the circumferential direction of the top wall 11 or thebottom wall 12 and is connected with both of the top wall 11 and thebottom wall 12, and a main cavity 002 is defined by the inner enclosure80, the top wall 11, together with the bottom wall 12; the outerenclosure 90 is on the outer side of the inner enclosure 80 and extendsalong the circumferential direction of the inner enclosure 80, the outerenclosure 90 is connected with the top wall 11 or/and the innerenclosure 80 on one side thereof in the thickness direction of theinflatable mattress and is connected with the bottom wall 12 or/and theinner enclosure 80 on the other side thereof, and an annular cavity 003is defined by the outer enclosure 90 together with the inner enclosure80; the at least one barrier wall 001 is each disposed in the annularcavity 003, and each barrier wall 001 extends along the circumferentialdirection of the inner enclosure 80 and is connected with both of theinner enclosure 80 and the outer enclosure 90, so that the annularcavity 003 is divided into a plurality of sub-cavities 301 arrangedsequentially in the thickness direction of the inflatable mattress,wherein adjacent sub-cavities 301 share one barrier wall 001.

In the present disclosure, a plurality of sub-cavities 301 are disposedaround the periphery of the inflatable mattress, such that the strengthof the periphery of the inflatable mattress can be enhanced, that is tosay, the strength of the peripheral edges of the inflatable mattress canbe enhanced as well, whereby the periphery of the inflatable mattressare not prone to a serious collapse thus a good user experience isprovided during use of the inflatable mattress. Moreover, at least onebarrier wall 001 is disposed between the inner enclosure 80 and theouter enclosure 90, and the at least one barrier wall 001 applies apulling force to the inner enclosure 80 and the outer enclosure 90 tofurther improve the stability of the inflatable mattress.

Optionally, all of the plurality of sub-cavities 301 communicate withthe main cavity 002. In other words, the communicated plurality ofsub-cavities 301 and the main cavity 002 form one cavity. When theinflatable mattress is compressed, air inside the inflatable mattresscan adaptively flow simultaneously in the sub-cavities 301 and the maincavity 002, so that the inflatable mattress is not prone to significantprotrusion and depression and is more comfortable during use.

Optionally, at least one through hole 81 is provided in the innerenclosure 80 so that at least one of the plurality of sub-cavities 301communicates with the main cavity 002. It should be noted that thenumber of the at least one through holes 81 is set as required. In thepresent disclosure, each sub-cavity 301 communicates with the maincavity 002 via a corresponding through hole 81 so that one cavity as awhole is formed inside the inflatable mattress to improve the comfort inuse.

It should be noted that the number of the at least one barrier wall 001is set as required. Optionally, the barrier walls 001 are plural innumber. The plurality of barrier walls 001 each have an annularstructure. The plurality of barrier walls 001 are arranged at intervalsalong the thickness direction of the inflatable mattress to divide theannular cavity 003 into (N+1) sub-cavities 301, where N is the number ofthe barrier walls 001 and is a positive integer. In the presentdisclosure, optionally, the number of the barrier walls 001 is two, andthe two barrier walls 001 divide the annular cavity 003 into threesub-cavities 301.

Referring to FIG. 11 and FIG. 12, the present disclosure also providesan inflatable mattress 100. The inflatable mattress 100 comprises twosupporting walls 110, a surrounding wall 120, and a first partitioningwall 130; wherein the two supporting walls 110 are arranged at aninterval along the thickness direction of the inflatable mattress 100,where the thickness of the inflatable mattress 100 refers the height inthe thickness direction after the inflatable mattress 100 is inflated;the surrounding wall 120 is connected with both two supporting walls 110and extends along the circumferential direction of the supporting walls110, and a main air storage cavity 140 is defined by the surroundingwall 120 together with the two supporting walls 110; the firstpartitioning wall 130 is located in the main air storage cavity 140, thefirst partitioning wall 130 is connected with both the surrounding wall120 and one of the two supporting walls 110 or is connected with both ofthe two supporting walls 110, the first partitioning wall 130 extendsalong the circumferential direction of the surrounding wall 120, and thefirst partitioning wall 130 divides the main air storage cavity 140 intoa first sub-cavity 141 and a second sub-cavity 142; the firstpartitioning wall 130 has at least one first fracture portion 134 in itsextension direction, and the first sub-cavity 141 and the secondsub-cavity 142 communicate with each other through the at least onefirst fracture portion 134.

The inflatable mattress 100 according to the present disclosurecomprises a main air storage cavity 140. A partitioning wall is disposedin the main air storage cavity 140. The partitioning wall has at leastone fracture portion. The partitioning wall divides the main air storagecavity 140 into a first sub-cavity 141 and a second sub-cavity 142communicating with each other through the fracture portion. Since thepartitioning wall has two ends disjoined at the fracture portion, a gapis naturally formed to communicate the first sub-cavity 141 with thesecond sub-cavity 142, it is unnecessary to separately provide a throughhole in the partitioning wall, thus the processing technology issimplified, and the processing efficiency is improved. Moreover, withthe arrangement of the partitioning wall, the partitioning wall canprovide a pulling force to pull and hold the supporting walls 110 andthe surrounding wall 120, whereby the stability of the inflatablemattress 100 is increased, whereby the inflatable mattress 100 does nottend to collapse at its edge and provides more comfort when theinflatable mattress 100 is in use. In addition, no through hole isprovided in the partitioning wall, thus the overall structure of thepartitioning wall is not damaged, the strength of the partitioning wallis improved, the partitioning wall is not easily damaged when itprovides the pulling force, and therefore the service life of thepartitioning wall is prolonged. When the inflatable mattress 100 bears aweight, the air inside the main air storage cavity 140 flows underpressure, so that the inflatable mattress 100 is unlikely to besignificantly depressed or protruded, thus the user experience isimproved. The first sub-cavity 141 and the second sub-cavity 142communicate with each other. During inflation, the inflation can beperformed only by connecting the first sub-cavity 141 or the secondsub-cavity 142 with an inflation device, thus the operation isconvenient and fast.

In the present disclosure, for sake of convenience of description, thetwo supporting walls 110 are a top wall 111 and a bottom wall 112,respectively. When in use, the bottom wall 112 is configured to beplaced on a carrier which may be a bed frame or the ground or the like.

In the present disclosure, optionally, the first partitioning wall 130is fixedly connected with both of the top wall 111 and the surroundingwall 120. A second sub-cavity 142 is formed on the outer side of thefirst partitioning wall 130. In other words, the second sub-cavity 142is located on the outer side of the first sub-cavity 141. The secondsub-cavity 142 is disposed around the periphery of the first sub-cavity141 along the circumferential direction of the surrounding wall 120,that is to say, the second sub-cavity 142 is located at the peripheraledges of the inflatable mattress 100. When the inflatable mattress 100is in use, the peripheral edges of the inflatable mattress 100 are notprone to collapse, thus a good user experience is provided.

It should be understood that the top wall 111 and the surrounding wall120 are connected with each other, an angle is formed at the connectionbetween the top wall 111 and the surrounding wall 120, and the firstpartitioning wall 130 is connected with both of the top wall 111 and thesurrounding wall 120, so that a second sub-cavity 142 having asubstantially triangular cross-sectional shape is formed by the firstpartitioning wall 130, the top wall 111, together with the surroundingwall 120. Portions of the first partitioning wall 130, the top wall 111,and the surrounding wall 120 that form the second sub-cavity 142 havehigh overall structural strength and good firmness, therefore theinflatable mattress 100 does not tend to collapse when in use. Here, thecross section of the second sub-cavity 142 refers to a planeperpendicular to an extension direction of the second sub-cavity 142.

In the present disclosure, optionally, the top wall 111 and the bottomwall 112 are identical in shape and size, and the top wall 111 and thebottom wall 112 are both provided as rectangular walls. Apparently, inother embodiments, the top wall 111 and the bottom wall 112 may beprovided to have different shapes and sizes. For example, the top wall111 and the bottom wall 112 are both rectangular walls, but the size ofthe bottom wall 112 is larger than the size of the top wall 111, so thata structure with a smaller top and a larger bottom is formed by the topwall 111, the bottom wall 112, and the surrounding wall 120, whereby theinflatable mattress 100 has better stability. In addition, the top wall111 and the bottom wall 112 may also be circular walls, triangularwalls, elliptic walls, or the like, which are not to be completelylisted in the present disclosure.

Correspondingly, the surrounding wall 120 has a rectangularcross-sectional shape. The cross section of the surrounding wall 120refers to a plane perpendicular to the thickness direction of theinflatable mattress 100. The surrounding wall 120 is arranged in thecircumferential direction of the top wall 111 and the bottom wall 112.The two sides of the surrounding wall 120 are connected with the topwall 111 and the bottom wall 112, respectively, so that a closed mainair storage cavity 140 having a substantially rectangular parallelepipedshape is formed by the surrounding wall 120, the top wall 111, togetherwith the bottom wall 112.

Referring to FIG. 13, in the present disclosure, the first partitioningwall 130 may be a first partitioning strap 131. The first partitioningstrap 131 has two first side edges 132 in its extension direction, thefirst partitioning strap 131 has two second side edges 133 in adirection perpendicular to its extension direction, wherein the firstpartitioning strap 131 extends along the circumferential direction ofthe surrounding wall 120, the two second side edges 133 of the firstpartitioning strap 131 are fixedly connected with the inner side of thetop wall 111 and the inner side of the surrounding wall 120,respectively, and a gap is provided between two first side edges 132 toform a first fracture portion 134, and the first sub-cavity 141 and thesecond sub-cavity 142 communicate with each other through the firstfracture portion 134. During the processing of the prior inflatablemattress 100, the partition that partitions the top wall 111 and thesurrounding wall 120 has an endless (or annular) structure, so that twoindependent cavities are formed in the inflatable mattress 100. Throughholes are separately provided in the partition in order to ensurecommunication between the two cavities, thus the process steps formanufacturing the inflatable mattress 100 are increased and the workingefficiency is reduced. Moreover, the integrity of the partition isdestroyed and the service life of the partition is shortened because ofthe arrangement of the through holes in the partition. In the presentdisclosure, a passage communicating the first sub-cavity 141 with thesecond sub-cavity 142 is naturally formed at the two ends of the firstpartitioning strap 131, it is unnecessary to provide a through hole inthe first partitioning strap 131, and there is no need to process andform the first partitioning strap 131 into an endless structure, so thatthe processing difficulty is reduced, and the efficiency is improved.

Referring to FIG. 11 and FIG. 15, in the present disclosure, optionally,the first partitioning straps 131 are plural in number, and theplurality of first partitioning straps 131 are arranged at intervals inthe circumferential direction of the surrounding wall 120. In otherwords, the first partitioning wall 130 comprises a plurality of firstpartitioning straps 131 which are arranged at intervals in thecircumferential direction of the surrounding wall 120. Apparently, thenumber of the first partitioning straps 131 may be set as required. Forexample, four first partitioning straps 131 are described as an example.The four first partitioning straps 131 are arranged at intervals in thecircumferential direction of the surrounding wall 120. In thecircumferential direction of the surrounding wall 120, there is a gapbetween each two adjacent first partitioning straps 131. That is to say,in the circumferential direction of the surrounding wall 120, there is agap between each two adjacent first side edges 132 on the two respectiveadjacent first partitioning straps 131, forming a corresponding firstfracture portion 134. In other words, four first fracture portions 134are formed by the four first partitioning straps 131, and the firstsub-cavity 141 and the second sub-cavity 142 communicate with each otherthrough the four fracture portions.

Optionally, the four first partitioning straps 131 are in one-to-onecorrespondence with the four side surfaces of the surrounding wall 120.In other words, in the circumferential direction of the surrounding wall120, a gap between each two adjacent first partitioning straps 131 isformed at a respective bent portion 121 of the surrounding wall 120.Since the surrounding wall 120 has a rectangular cross section, thesurrounding wall 120 has four bent portions 121, wherein positions ofthe four first fracture portions 134 are corresponding to those of thefour bent portions 121, respectively. In the present disclosure, eachfirst fracture portion 134 is corresponding to the respective bentportion 121 of the surrounding wall 120, that is to say, the firstpartitioning wall 130 is in a fractured state at the bent portions 121,thus stress concentration is reduced, and the first partitioning wall130 is not easily damaged thus has a long service life.

Referring to FIG. 14 to FIG. 16, in the present disclosure, optionally,the inflatable mattress 100 further comprises a second partitioning wall150. The second partitioning wall 150 is connected with both of thebottom wall 112 and the surrounding wall 120 to divide the firstsub-cavity 141 into a third sub-cavity 143 and a fourth sub-cavity 144.The fourth sub-cavity 144 is on the outer side of the third sub-cavity143 and is arranged around the periphery of the third sub-cavity 143,and the fourth sub-cavity 144 has a substantially triangularcross-sectional shape. The cross section of the fourth sub-cavity 144refers to a plane perpendicular to the extension direction of the fourthair cavity. The second partitioning wall 150 has at least one secondfracture portion 152 in its extension direction, and the thirdsub-cavity 143 and the fourth sub-cavity 144 communicate with each otherthrough the at least one second fracture portion 152.

Optionally, the structure of the second partitioning wall 150 may bedesigned to be the same as the structure of the first partitioning wall130. For example, the second partitioning wall 150 may comprise onesecond partitioning strap 151. The second partitioning strap 151 extendsin the circumferential direction of the surrounding wall 120, the twoopposite side edges of the second partitioning strap 151 are connectedwith both of the bottom wall 112 and the surrounding wall 120, and thereis a gap between two ends of the second partitioning strap 151 in itsextension direction to form a second fracture portion 152.

Referring to FIG. 15, optionally, the second partitioning wall 150 maycomprise a plurality of second partitioning straps 151 arranged atintervals in the circumferential direction of the surrounding wall 120.Each second partitioning strap 151 extends in the circumferentialdirection of the surrounding wall 120, wherein the two opposite sideedges of each second partitioning strap 151 are connected with both ofthe bottom wall 112 and the surrounding wall 120, and there is a gapbetween two adjacent ends in the extension directions of two secondpartitioning straps 151 which are adjacent in the circumferentialdirection of the surrounding wall 120, forming a respective secondfracture portion 152. For example, the number of the second partitioningstraps 151 is four, thus four second fracture portions 152 are formed bythe four second partitioning straps 151 respectively, wherein the foursecond fracture portions 152 are in one-to-one correspondence with thefour bent portions 121 of the surrounding wall 120.

The inflatable mattress 100 according to the present disclosurecomprises a top wall 111, a bottom wall 112, a surrounding wall 120, afirst partitioning wall 130, and a second partitioning wall 150, whereinthe top wall 111 and the bottom wall 112 face each other in thethickness direction of the inflatable mattress 100, and the two sides ofthe surrounding wall 120 are connected with the peripheries of the topwall 111 and the bottom wall 112, respectively, so that a closed mainair storage cavity 140 is formed. An inflation inlet is provided in thetop wall 111, the bottom wall 112, or the surrounding wall 120. An airvalve is disposed at the inflation inlet. The air valve may be opened toinflate the main air storage cavity 140, and the air valve may be closedafter the inflation is completed. The first partitioning wall 130 andthe second partitioning wall 150 are spaced apart from each other in thethickness direction of the inflatable mattress 100. The firstpartitioning wall 130 is connected with both of the top wall 111 and thesurrounding wall 120 to form a first sub-cavity 141 and a secondsub-cavity 142; and the second partitioning wall 150 is connected withboth of the bottom wall 112 and the surrounding wall 120 to form a thirdsub-cavity 143 and a fourth sub-cavity 144. The first partitioning wall130 comprises four first partitioning straps 131, wherein the four firstpartitioning straps 131 are arranged at intervals in the circumferentialdirection of the surrounding wall 12, each of the first partitioningstraps 131 is connected with both of the top wall 111 and thesurrounding wall 120, and a gap is provided between each two adjacentfirst partitioning straps 131 in the circumferential direction of thesurrounding wall 120, with the gap being at the respective bent portion121 of the surrounding wall 120, thus forming a respective firstfracture portion 134, and the second sub-cavity 142 and the thirdsub-cavity 143 communicate with each other through the first fractureportions 134. The second partitioning wall 150 comprises four secondpartitioning straps 151, wherein the four second partitioning straps 151are arranged at intervals in the circumferential direction of thesurrounding wall 120, each of the second partitioning straps 151 isconnected with both of the bottom wall 112 and the surrounding wall 120,a gap is provided between each two adjacent second partitioning straps151 in the circumferential direction of the surrounding wall 120, withthe gap being at the bent portion 121 of the surrounding wall 120, thusforming a respective second fracture portion 152, and the fourthsub-cavity 144 and the third sub-cavity 143 communicate with each otherthrough the second fracture portions 152. That is to say, the secondsub-cavity 142, the third sub-cavity 143, and the fourth sub-cavity 144communicate with one another.

In the present disclosure, it should be noted that all the fixedconnections between the top wall 111 and the surrounding wall 120,between the bottom wall 112 and the surrounding wall 120, between thefirst partitioning strap 131 and the top wall 111, between the firstpartitioning straps 131 and the surrounding wall 120, between the secondpartitioning straps 151 and the bottom wall 112, and between the secondpartitioning straps 151 and the surrounding wall 120 may be implementedby fusion welding.

In the present disclosure, optionally, the inflatable mattress 100further comprises a pull strap 160, wherein the pull strap 160 islocated in the third sub-cavity 143, one end of the pull strap 160 isfixedly connected with the top wall 111, and the other end of the pullstrap 160 is fixedly connected with the bottom wall 112. Optionally,both the fixed connections between the pull strap 160 and the top wall111 and between the pull strap 160 and the bottom wall 112 may beimplemented by fusion welding. The pull strap 160 is provided such thatthe stability of the inflatable mattress 100 can be improved, therebyavoiding a situation in which the inflatable mattress 100 is excessivelydeformed and thus severely collapsed to affect the user experience.

Optionally, a plurality of the pull straps 160 are provided, wherein theplurality of pull straps 160 are distributed in the third sub-cavity 143in a rectangular array.

The present disclosure also provides an inflatable bed (or airbed, whichis not shown), which comprises the inflatable mattress 100 describedabove. The inflatable bed is processed and manufactured with simpleprocesses, by which the processing difficulty is reduced, and theprocessing efficiency is improved.

The various types of supporting straps in the above embodiments are eachequipped with an appropriate number of limiting pull straps, so that agood effect can be achieved when being used as a whole, and the userscan be provided with different choices to improve the user experience.

In summary, in the inflatable mattress of the present disclosure, goodsupport is provided at the edge positions of the first cavity body 10 bythe second cavity body 20 and the third cavity body 30, and the thirdcavity body 30 having a height lower than that of the second cavity body20 is less deformed and thus can apply a certain pulling force to thesecond cavity body 20, whereby the support strength at the edgepositions is further enhanced, so that the entire inflatable mattresshas a better weight-bearing capability with less collapse deformation,and is more comfortable for a user lying thereon.

In the embodiments of the present disclosure, for example, theinflatable mattress is inflated, when a user is lying on the inflatablemattress, the first cavity body provides the majority of support for theuser, and when the user's body presses against an edge portion of theinflatable mattress, the user is supported by the second cavity body.The third cavity body having a height smaller than that of the secondcavity body is unlikely to be directly pressed down and can provideadditionl support at the edge position to prevent excessive collapse ofthe edge position. Moreover, since the third cavity body is connectedwith both of the second cavity body and the lying part, the third cavitybody has a certain pulling effect on the second cavity body to furtherprevent collapse of the second cavity body due to a force appliedthereto and to provide a better using experience for the user.

The above description is merely illustrative of preferred embodiments ofthe present disclosure and is not intended to limit the presentdisclosure. It will be understood by those skilled in the art thatvarious modifications and variations can be made to the presentdisclosure. Any modifications, equivalent alternatives, improvements andso on made within the spirit and principle of the present disclosure areto be included in the scope of protection of the present disclosure.

INDUSTRIAL APPLICABILITY

In summary, the present disclosure provides an inflatable mattress,which has a stable and reliable structure and offers a good userexperience.

What is claimed is:
 1. An inflatable mattress, comprising: a firstcavity body, a second cavity body, and a third cavity body; wherein thefirst cavity body comprises a top wall, a bottom wall, and a sidesurrounding wall, the top wall and/or the bottom wall serves as a lyingpart on which a user lies down, and a first air cavity is formed by thetop wall, the bottom wall, and the side surrounding wall; the secondcavity body is disposed at a junction between the lying part and theside surrounding wall and the second cavity body together with an outerwall surface of the lying part and an outer wall surface of the sidesurrounding wall form a second air cavity, and the third cavity body isdisposed at a junction between the lying part and the second cavity bodyand the third cavity body together with an outer wall surface of thesecond cavity body and the outer wall surface of the lying part form athird air cavity; and a height of the third cavity body is lower than aheight of the second cavity body in a height direction of the inflatablemattress when in use.
 2. The inflatable mattress according to claim 1,wherein the top wall is disposed as the lying part, both the lying partand the bottom wall are provided with supporting straps, and at leastone of the supporting straps on the lying part is connected with atleast one of the supporting straps on the bottom wall by a respectivelimiting pull strap.
 3. The inflatable mattress according to claim 1,wherein the inflatable mattress further comprises a fourth cavity body,and the fourth cavity body is disposed at a junction between the bottomwall and the side surrounding wall and the fourth cavity body togetherwith an outer wall surface of the bottom wall and the outer wall surfaceof the side surrounding wall form a fourth air cavity.
 4. The inflatablemattress according to claim 1, wherein both the top wall and the bottomwall are provided as the lying parts, each of the lying parts isprovided with supporting straps, and the respective supporting straps ofthe two lying parts are connected by limiting pull straps.
 5. Theinflatable mattress according to claim 1, wherein the second cavity bodyand the third cavity body adjacent to each other are used as a supportgroup, and the first cavity body is symmetrically provided with twosupport groups which are provided on the two opposite sides in theheight direction of the inflatable mattress.
 6. The inflatable mattressaccording to claim 1, wherein the second cavity body and the thirdcavity body are both distributed in a shape of two concentricrectangles.
 7. The inflatable mattress according to claim 2, whereineach supporting strap is a closed loop-shaped supporting strap, ahoneycomb-structured circular supporting strap, a straight-stripsupporting strap, a vertical-strip supporting strap, a single-strip wavysupporting strap, or a closed wavy supporting strap.
 8. The inflatablemattress according to claim 1, wherein the first air cavity, the secondair cavity, and the third air cavity communicate with one another. 9.The inflatable mattress according to claim 1, wherein the inflatablemattress comprises a valve, the valve is disposed on the sidesurrounding wall, and the valve is configured to communicate the firstair cavity with an external environment or disconnect the first aircavity from the external environment.
 10. The inflatable mattressaccording to claim 1, wherein the inflatable mattress further comprisesan inflating pump which is disposed on the side surrounding wall andconfigured to inflate the inflatable mattress.
 11. An inflatablemattress, comprising a top wall, a bottom wall, an inner enclosure, anouter enclosure, and at least one barrier wall, wherein the top wall andthe bottom wall are arranged at an interval in a thickness direction ofthe inflatable mattress, the inner enclosure extends in acircumferential direction of the top wall or the bottom wall and isconnected with both of the top wall and the bottom wall, and a maincavity is defined by the inner enclosure, the top wall, together withthe bottom wall; the outer enclosure is on an outer side of the innerenclosure and extends in a circumferential direction of the innerenclosure, one side of the outer enclosure is connected with the topwall or/and the inner enclosure in the thickness direction of theinflatable mattress and the other side of the outer enclosure isconnected with the bottom wall or/and the inner enclosure in thethickness direction of the inflatable mattress, and an annular cavity isdefined by the outer enclosure together with the inner enclosure; the atleast one barrier wall is each disposed in the annular cavity, and eachbarrier wall extends in the circumferential direction of the innerenclosure and is connected with both of the inner enclosure and theouter enclosure, so that the annular cavity is divided into a pluralityof sub-cavities arranged which are sequentially in the thicknessdirection of the inflatable mattress.
 12. The inflatable mattressaccording to claim 11, wherein all of the plurality of sub-cavitiescommunicate with the main cavity.
 13. The inflatable mattress accordingto claim 11, wherein a through hole is provided in the inner enclosureso that at least one of the plurality of sub-cavities communicates withthe main cavity.
 14. An inflatable mattress, comprising two supportingwalls, a surrounding wall, and a first partitioning wall, wherein thetwo supporting walls are arranged at an interval in a thicknessdirection of the inflatable mattress, the surrounding wall is connectedwith both of the two supporting walls and extends in a circumferentialdirection of the supporting wall, and a main air storage cavity isdefined by the surrounding wall together with the two supporting walls;the first partitioning wall is in the main air storage cavity, the firstpartitioning wall is connected with both the surrounding wall and one ofthe two supporting walls or is connected with both of the two supportingwalls, the first partitioning wall extends in a circumferentialdirection of the surrounding wall, and the first partitioning walldivides the main air storage cavity into a first sub-cavity and a secondsub-cavity; the first partitioning wall has at least one first fractureportion in its extension direction, and the first sub-cavitycommunicates with the second sub-cavity through the at least one firstfracture portion.
 15. The inflatable mattress according to claim 14,wherein: the first partitioning wall comprises a plurality of firstpartitioning straps, wherein each of the first partitioning straps isconnected with both the surrounding wall and one of the two supportingwalls, the plurality of first partitioning straps are arranged atintervals in the circumferential direction of the surrounding wall, andone of the first fraction portions is formed between the respectivefirst partitioning straps which are adjacent in the circumferentialdirection of the surrounding wall.
 16. The inflatable mattress accordingto claim 14, wherein: the surrounding wall has bent portions in itsextension direction, and one of the first fracture portions iscorrespondingly disposed at a position where at least one of the bentportions is provided.
 17. The inflatable mattress according to claim 14,wherein: the second sub-cavity is on an outer side of the firstsub-cavity, and the second sub-cavity has a triangular cross-sectionalshape, wherein the cross section is a plane perpendicular to anextension direction of the second sub-cavity.
 18. The inflatablemattress according to claim 14, wherein: the inflatable mattress furthercomprises a second partitioning wall, wherein the first partitioningwall and the second partitioning wall are arranged at an interval in thethickness direction of the inflatable mattress, the second partitioningwall is in the main air storage cavity, the second partitioning wall isconnected with both the surrounding wall and the other one of the twosupporting walls, the second partitioning wall extends in thecircumferential direction of the surrounding wall, and the secondpartitioning wall divides the first sub-cavity into a third sub-cavityand a fourth sub-cavity communicating with each other.
 19. Theinflatable mattress according to claim 18, wherein: the secondpartitioning wall has at least one second fracture portion in itsextension direction, and the third sub-cavity communicates with thefourth sub-cavity through the at least one second fracture portion.